[MacPorts] #20165: Update mercurial to version 1.3

[MacPorts]

#20165: Update mercurial to version 1.3
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 Reporter:  arthurk@…             |       Owner:  macports-tickets@…                   
     Type:  update                |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  1.7.1                                
 Keywords:  mercurial             |        Port:  mercurial                            
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 The following patch updates mercurial to version 1.3. It also removes the
 description of the bash_completion variant since it already has a global
 description:

 --->  Verifying Portfile for mercurial
 Warning: Variant bash_completion overrides global description
 --->  0 errors and 1 warnings found.

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Ticket URL: <http://trac.macports.org/ticket/20165>
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